<template>
  <el-dialog title="选择素材" :visible.sync="dialogVisible" :close-on-click-modal="false">
    <div class="content" @click.stop="()=>{}">
      <el-form label-position="left" label-width="100px" style="width: 100%; padding-left: 20px;">
        <el-form-item label="所选素材：" v-if="config.count !== 1">
          <div class="el-tag-box">
              <el-tag v-for="(item, index) of result" :key="item.id" :closable="true" @close="delItem(index)">{{item.name}}</el-tag>
          </div>
        </el-form-item>
      </el-form>
      <el-form ref="searchForm" class="search-block" :model="listQuery" label-position="right" label-width="100px" style="width: 100%">
        <el-row>
          <el-col :md="24" :lg="12" :xl="8">
            <el-form-item label="素材标题：" prop="keyword">
              <el-input v-model="listQuery.keyword" placeholder="请输入素材标题或素材关键字搜索"></el-input>
            </el-form-item>
          </el-col>
          <el-col :md="24" :lg="12" :xl="8">
            <el-form-item label="素材类型:" prop="type">
              <el-select v-model="listQuery.type" clearable @change="search">
                <el-option  label="单图文素材" :value="1"></el-option>
                <el-option  label="多图文素材" :value="2"></el-option>
                <el-option  label="视频素材" :value="3"></el-option>
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :md="24" :lg="12" :xl="8">
            <el-form-item label="素材分组:" prop="type">
              <el-select v-model="listQuery.groupId" clearable @change="search">
                <el-option  :label="item.name" :value="item.id" v-for="item in groupList" :key="item.id"></el-option>
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :md="24" :lg="12" :xl="8">
            <el-form-item label="是否置顶:" prop="topType">
              <el-select v-model="listQuery.topType" clearable @change="search">
                <el-option  label="置顶" :value="1"></el-option>  
                <el-option  label="不置顶" :value="0"></el-option>
              </el-select>
            </el-form-item>
          </el-col>
          <el-col :md="24" :lg="12" :xl="12">
            <el-form-item label="创建时间：">
              <el-date-picker
                v-model="rangeTime"
                type="daterange"
                range-separator="至"
                value-format="yyyy-MM-dd"
                start-placeholder="开始日期"
                end-placeholder="结束日期">
              </el-date-picker>
            </el-form-item>
          </el-col>
        </el-row>
        <el-form-item label="" class="btn-item">
          <el-button type="primary" size="mini" icon="el-icon-search" plain @click="search">搜索</el-button>
          <span class="btn-reset"  @click="resetForm('searchForm')">清空搜索条件</span>
        </el-form-item>
      </el-form>
      <div class="check-all">
        <label class="input-checkbox" v-if="config.count !== 1">
          <input type="checkbox" :value="checkAll" v-model="checkAll" @change="handleCheckAll"/>
          <span></span>
        </label>
      </div>
      <el-table :data="list" v-loading="listLoading" element-loading-text="给我一点时间" border @row-click="clickRow">
          <el-table-column align="center" width="50">
              <template slot-scope="scope">
                  <label class="input-radio" v-if="config.count === 1">
                      <input type="radio" :value="{id: scope.row.id}" v-model="itemsRadio" @change="(e) => setValue(e.target.checked, scope.row)"/>
                      <span></span>
                  </label>
                  <label class="input-checkbox" v-else>
                      <input type="checkbox" :value="{id: scope.row.id}" v-model="itemsCheck" @change="(e) => setValue(e.target.checked, scope.row)"/>
                      <span></span>
                  </label>
              </template>
          </el-table-column>
          <el-table-column align="center" type="index" label="序号" width="80"></el-table-column>
          <el-table-column align="center" label="素材标题" prop="title"></el-table-column>
          <el-table-column align="center" label="素材类型" prop="type">
            <template slot-scope="scope">
              <span v-if="scope.row.type===1">单图文</span>
              <span v-if="scope.row.type===2">多图文</span>
              <span v-if="scope.row.type===3">视频</span>
            </template>
          </el-table-column>
          <el-table-column align="center" label="素材分组" prop="groupName"></el-table-column>
          <el-table-column align="center" label="素材标签" prop="tagName"></el-table-column>
      </el-table>
      <el-pagination
        @current-change="handleCurrentChange"
        :current-page.sync="listQuery.pageNum"
        :page-size="listQuery.pageSize"
        background
        layout="total, prev, pager, next, jumper"
        style="text-align: center"
        :total="listTotal">
      </el-pagination>
    </div>
    <div slot="footer" class="dialog-footer" @click.stop="()=>{}">
      <el-button type="primary" :loading="btnLoading" @click="choose">确定</el-button>
      <el-button @click="close">取消</el-button>
    </div>
  </el-dialog>
</template>
<script>
export default {
  name: 'choose-goods',
  props: {
    config: { type: Object, default(){ return {} } },
    selected: { type: Array, default(){ return [] } },
  },
  data(){
    return {
      checkAll: false,
      dialogVisible: true,
      btnLoading: false,
      categoryLoading: true,
      result: this.selected,
      itemsCheck: this.selected.length ? this.selected.map(item => { return { id: item.id }}): [],
      itemsRadio: this.selected.length ? {id: this.selected[0].id} : {},
      groupList: [],
      rangeTime:[],
      listQuery: {
        pageNum: 1,
        pageSize: 8,
        keyword:'',
        type:'',
        endTime:'',
        startTime:'',
        channelId: 1,
        groupId: '',
        goodsType: this.config.goodsType || 1,
      },
      list: [],
      listTotal: 0,
      listLoading: false
    }
  },
  created(){
    this.getList()
    this.getGroupList()
  },
  methods: {
    copyObject (obj) {
      let newObj = {}
      if (obj instanceof  Array) {
        newObj = []
      }
      for (let key in obj) {
        let val = obj[key]
        newObj[key] = typeof val === 'object' ? this.copyObject(val) : val;
      }
      return newObj
    },
    handleCheckAll () {
      let temp = this.copyObject(this.list)
      if (this.checkAll) {
        this.itemsCheck.map((item, index) => {
          this.list.map((_item, _index) => {
            if (_item.id === item.id) {
              temp.splice(_index, 1)
            }
          })
        })
        let tempResult = temp
        let tempList = temp.map(item => { return { id: item.id }})
        this.itemsCheck = this.itemsCheck.concat(tempList)
        this.result = this.result.concat(tempResult)
      } else {
        if (this.itemsCheck.length === this.listQuery.pageSize) {
          this.itemsCheck = []
          this.result = []
        } else {
          // 将一个数组中的值从另一个数组剔除
          this.itemsCheck = this.itemsCheck.filter(item => {
            let idList= this.list.map(v => v.id)
            return !idList.includes(item.id)
          })
          this.result = this.result.filter(item => {
            let resultList= this.list.map(v => v.id)
            return !resultList.includes(item.id)
          })
        }
      }
    },
    // 获取列表
    getList () {
      this.listLoading = true
      if (this.rangeTime) {
        if (this.rangeTime.length>0) {
          this.listQuery.startTime = this.rangeTime[0]
          this.listQuery.endTime = this.rangeTime[1]
        } else {
          this.listQuery.startTime = ''
          this.listQuery.endTime = ''
        }
      } else {
        this.listQuery.startTime = ''
        this.listQuery.endTime = ''
      }
      this.request({
        url: '/bus-material/search',
        method: 'post',
        data: this.listQuery
      }).then(({data}) => {
        this.list = data.list
        this.listTotal = data.total
        this.listLoading = false
        let tempList = this.list.map(item => { return { id: item.id }})
        let index = this.itemsCheck.findIndex((item) => {
          return item.id === tempList[0].id
        })
        if (index >= 0 && tempList.length === this.listQuery.pageSize) {
          this.checkAll = true
        } else {
          this.checkAll = false
        }
      }).catch(err => {
        this.list = []
        this.listTotal = 0
        this.listLoading = false
      });
    },
    // 获取素材分组信息
    getGroupList() {
      this.request({
        url: '/bus-group/list',
        method: 'get',
        params: {
          channelId: 1
        }
      }).then((res) => {
        if(res.code===200 || res.code === '200'){
          this.groupList = res.data
        }
      }).catch(err => {
        console.log(err)
      })
    },
    resetForm (formName) {
      this.$nextTick(() => {
        this.$refs[formName].resetFields()
      })
    },
    // 搜索
    search () {
      this.listQuery.pageNum = 1
      this.getList()
    },
    // 切换分页
    handleCurrentChange (page) {
      this.listQuery.pageNum = page
      this.getList()
    },
    // 选择change
    setValue(checked, row){
      if(checked){
        if(this.config.count ===1 ){
          this.result = [row]
        } else {
          this.result.push({ ...row })
        }
      } else {
        let index = this.itemsCheck.findIndex(item => row.id === item.id);
        this.result.splice(index, 1);
      }
      let len = this.result.length
      if (len % this.listQuery.pageSize === 0) {
        this.checkAll = true
      } else {
        this.checkAll = false
      }
    },
    // 单击行
    clickRow(row) {
      if (this.config.count === 1) {
        this.itemsRadio = { id: row.id };
        this.result = [row];
      } else {
        let index = this.itemsCheck.findIndex(item => row.id === item.id);
        if (index < 0){
          this.itemsCheck.push({ id: row.id });
          this.result.push({ ...row });
        } else {
          this.itemsCheck.splice(index, 1);
          this.result.splice(index, 1);
        }
      }
      let len = this.itemsCheck.length
      if (len % this.listQuery.pageSize === 0) {
        this.checkAll = true
      } else {
        this.checkAll = false
      }
    },
    // 通过tag删除
    delItem(index) {
      this.itemsCheck.splice(index, 1);
      this.result.splice(index, 1);
    },
    // 关闭弹窗
    close(){
      this.dialogVisible = false;
      document.body.removeChild(this.$el);
    },
    // 选完，点击确定
    choose(){
      if (this.result.length < 1) {
        return this.$message.error('请选择素材');
      }
      if (this.config.count > 0 && this.itemsCheck.length > this.config.count) {
        return this.$message.error(`最多选择${this.config.count}个素材`);
      }
      this.$emit('choose', this.result)
      this.close()
    }
  }
}
</script>
<style lang="scss" scoped>
.check-all {
  margin-left: 15px;
  margin-top: 16px;
  position: absolute;
  z-index: 99;
}
</style>